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Poecilia reticulata


Poecilia reticulata
Guppy
孔雀
Red Tail Guppy
红尾孔雀
Blue Tail Guppy
蓝尾孔雀
Blue Variegated Guppy
蓝花孔雀
Green Variegated Guppy
录花孔雀
Black Tail Guppy
黑尾孔雀
Golden Top Blue Var. Guppy
金蓝花孔雀
Golden Top Red Var. Guppy
金红花孔雀
Red Blonde Var. Guppy
五花孔雀
Red Blonde Cobra Guppy
红木弄蛇皮孔雀
Red Cobra Guppy
红蛇皮孔雀
Blue Cobra Guppy
蓝蛇皮孔雀
Green Cobra Guppy
绿蛇皮孔雀
Golden Cobra Guppy
金蛇皮孔雀
Fine Spotted Green Cobra Guppy
绿细蛇皮孔雀
Red Neon Guppy
红霓光孔雀
Blue Neon Guppy
蓝霓光孔雀
Red Tuxedo Guppy
红燕尾服孔雀
Red Blonde Tuxedo Guppy
黑木弄孔雀
Yellow Tuxedo Guppy
黄燕尾服孔雀
Red Blonde Guppy
红木弄孔雀
Leopard Guppy
豹纹孔雀
Blue Diamond Guppy
蓝砖石孔雀
Red Diamond Guppy
红砖石孔雀
Fine Spotted Glass Tail Guppy
白细花孔雀
Fine Spotted Red Var. Guppy
细花孔雀
Red Double Sword Guppy
红双剑孔雀
Green Double Sword Guppy
绿双剑孔雀
Dragon Head Guppy
龙头孔雀
Phoenix Guppy
凤凰孔雀
Blue Phoenix Guppy
黃雀孔雀
Sunset Guppy
日落孔雀
Metallic Rainbow Guppy
金属彩虹孔雀
Metallic Red Guppy
金属虹孔雀
Platinum Flora Guppy
铂金花孔雀
  

The guppy (Poecilia reticulata), also known as the millionfish, is one of the most popular freshwater aquarium fish species in the world. It is a small member of the Poeciliidae family [females 4–6 centimetres long, males 2.5–3.5 centimetres long and like all other members of the family, is live-bearing.
Robert John Lechmere Guppy discovered this tiny fish in Trinidad in 1866, and the fish was named Girardinus guppii in his honour by Albert Günther later that year. However, the fish had previously been described in America. Although Girardinus guppii is now considered a junior synonym of Poecilia reticulata, the common name "guppy" still remains.
Over time, guppies have been given a variety of taxonomic names, although Poecilia reticulata is the name currently considered to be valid.
Guppies are native to Antigua and Barbuda, Barbados, Brazil, Guyana, Netherlands Antilles, Trinidad and Tobago, the U.S. Virgin Islands and Venezuela.
However, guppies have been introduced to many different countries on all continents, except Antarctica. Sometimes this has occurred accidentally, but most often as a means of mosquito control, the hope being that the guppies would eat the mosquito larvae, slowing the spread of malaria. In many cases, these guppies have had a negative impact on native fish faunas
Guppies exhibit sexual dimorphism. While wild-type females are grey in body colour, males have splashes, spots, or stripes that can be any of a wide variety of colors.
Guppies are highly prolific livebearers.The gestation period of a guppy is 21–30 days, with an average of 28 days, varying according to water temperature. Males possess a modified tubular anal fin, the gonopodium, located directly behind the ventral fin, which is flexed forward and used as a delivery mechanism for one or more balls of spermatozoa. The male will approach a female and will flex his gonopodium forward before thrusting it into her and ejecting these balls. After the female guppy is inseminated, a dark area near the anus, known as the gravid spot, will enlarge and darken. Just before birth, the eyes of fry may be seen through the translucent skin in this area of the female's body. When birth occurs, individual offspring are dropped in sequence over the course of an hour or so.
Guppies prefer water temperatures of about 26 °C for reproduction. The female guppy has drops of between two and 50 fry at a time, typically ranging between 5 and 30. After giving birth, the female is ready for conception again within only a few hours. Guppies have the ability to store sperm up to a year, so the females can give birth many times without depending on the presence of a male. From the moment of birth, each fry is fully capable of swimming, eating, and avoiding danger. If not kept separate, the older, mature guppies will eat the fry, so the use of a breeder box, net breeder, or a separate 20–40 litres tank is recommended. Live plants may be used as hiding places for the fry.
Young fry take roughly three or four months to reach maturity. In the aquarium, they are usually fed finely ground flake foods, baby brine shrimp or, unless they are put in a separate tank, uneaten food from the adults. In addition, they nibble on algae.
Guppies have been selectively bred to produce a variety of colors and patterns. In the wild, male guppies are dull black or brown in colour, with some coloured spots, while females are fully dull grey. The wild guppies that showed the most colours in each generation were bred to produce the "fancy guppies" seen in pet stores and guppy shows today.
The guppy has been successfully hybridised with various species of molly (Poecilia latipinna or velifera), e.g. male guppy and female molly. However, the hybrids are always males and appear to be infertile. The guppy has also been hybridised with the Endler's livebearer (Poecilia wingei) to produce fertile offspring.
Guppies have 23 pairs of chromosomes, including one pair of sex chromosomes.Selective breeding has produced many different strains, such as the snakeskin and grass varieties. A strain is defined as a population of guppies that show the same characteristics.

The guppy prefers a hard water aquarium with a temperature between 25.5 and 27.8 °C  and salt levels equivalent to one tablespoon per 5 US gallons (19 l; 4.2 imp gal).They can withstand levels of salinity up to 150% that of normal seawater, which has led to them being occasionally included in marine tropical community tanks, as well as in freshwater tropical tanks. Guppies are generally peaceful, though nipping behaviour is sometimes exhibited between male guppies or towards other top swimmers like platys and swordtails, and occasionally other fish with prominent fins, such as angelfish. Its most famous characteristic is its propensity for breeding, and it can breed in both fresh water and marine aquariums.
Guppies bred by aquarists produced variations in appearance ranging from colour consistency to various tail forms.
Well-fed adults do not often eat their own young, although sometimes safe zones are required for the fry. Specially designed livebearer birthing tanks, which can be suspended inside the aquarium, are available from aquatic retailers. These also serve to shield the pregnant female from further attention from the males, which is important, because the males will sometimes attack the females while they are giving birth. It also provides a separate area for the newborn young as protection from being eaten by their mother. However, if a female is put in the breeder box too early, it may cause her to have a miscarriage. Well-planted tanks that offer a lot of barriers to adult guppies will shelter the young quite well. Java moss, duckweed (Lemna minor and other Lemna species), and water wisteria are all excellent choices. A continuous supply of live food, such as Daphnia, will keep adult fish full and may spare the fry when they are born.

孔雀鱼孔雀鱼体长4~5厘米,是最容易饲养的一种热带淡水鱼。它丰富的色彩、多姿的形状和旺盛的繁殖力,倍受热带淡水鱼饲养族的青睐。尤其是繁殖的后代,会有很多与其亲鱼色彩、形状不同的鱼种产生。。
别名彩虹鱼、百万鱼、库比鱼。孔雀鱼体形修长,有极为美丽的尾鳍。成体雄鱼体长3厘米左右,体色艳基色有淡红、淡绿、淡黄、红、紫、孔雀蓝等,尾部长占体长的2/3左右,尾鳍上有1—3行排列整齐的黑色圆斑或是一彩色大圆斑。尾鳍形状有圆尾、旗尾、三角尾、火炬尾、琴尾、齿尾、燕尾、裙尾、上剑尾、下剑尾等。成体雌鱼体长可达5—6 厘米,尾部长占体长的1/2以上,体色较雄鱼单调,尾鳍呈鲜艳的蓝、黄、淡绿、淡蓝色,散布着大小不等的黑色斑点,这种鱼的尾鳍很有特色,游动时似小扇扇动。
孔雀鱼适应性很强,最适宜生长温度为18—28℃,喜微碱性水质,pH5.5—8.0,食性广,性情温和,活泼好动,能和其他热带鱼混养。孔雀鱼易养,但要获得体色艳丽,体形优美的鱼则从鱼苗期就需要宽大的水体,较多的水草,鲜活的饵料,适宜的水质等环境。孔雀鱼4~5月龄性腺发育成熟,但是繁殖能力很弱,在水温24℃,硬度8度左右的水中,每月能繁殖1次,每次产鱼苗数视鱼体大小而异,少则5余尾,多则70~80尾。当雌鱼腹部膨大鼓出,近肛门处出现一块明显的黑色胎斑时,是临产的征兆。
孔雀鱼,卵胎生将鱼的代表,由于周期性的生产力,使得它赢得「百万鱼」的封号,也因此常是初饲养观赏鱼者家中的常客。早期的孔雀鱼以东南亚进口及国内南部生产为主,两者的共通特性是对水的硬度要求很高,且都是采室外培育的方式,因此充分受到阳光的洗礼,所以色泽显得特别灿烂。起初孔雀鱼虽为各界所接受,但落得和其它鱼种混养及廉价易阵亡的悲惨印象,因此国内观赏鱼的发展虽有数十年的历史,而孔雀鱼却得数十年如一日,毫无进展可言。这期间虽然有数波推展孔雀鱼的动作,但始终因天时地利种种条件不配合而无疾而终。主要是国内观赏鱼界数十年来的高度开发,至今已进入瓶颈,因此在这波倡导活动之下终于获得各方的响应,让孔雀鱼在观赏鱼界中建立一个新的领域。孔雀鱼往往是初学入门者第一次饲养的鱼种,却也常常是养鱼数十年者重拾的鱼种,此现象正巧说明了孔雀鱼易懂难精的特性,无怪乎能让人如此的着迷,愿意摒弃所有的鱼种只留孔雀鱼。
孔雀鱼属卵胎生鱼类。繁殖力强,性成熟早,幼鱼经3-4个月饲养便进入成熟期可以繁殖后代,性成熟迟早与水温高低、饲养条件密切相关。 孔雀鱼繁殖时要选择一个较大的水族缸,水温保持在26摄氏度。pH5.5-8.0,同时要多种一些水草,然后按1雄配3雌的比例放入种鱼。待鱼发情后,雌鱼腹部逐渐膨大,出现黑色胎斑;雄鱼此时不断追逐雌鱼,雄鱼的交接器插入雌鱼的泄殖孔时排出精子,进行体内受精。当雌鱼胎斑变得大而黑、肛门突出时,可捞入另一水族箱内待产。
 待产箱中的温度应比原水温高1~2度,箱底放青苔或水草,给小鱼设一个避身之处。雌鱼产仔后,要立即将其捞出,以免吃掉仔鱼。或者要塑料片围成漏斗状隔离墙,侵入水中,将产仔雌鱼放在漏斗中,使仔鱼产出后从漏斗下空洞掉入漏斗外水体,雌鱼就吃不到仔鱼了。
  孔雀鱼每月产仔一次,视雌鱼大小,每次可产10-120尾仔鱼,一年产仔量相当多,故有“百万鱼”之称。繁殖时应注意,同窝留种鱼不要超过三代,以免连续近亲繁殖导致品种退化,使后代鱼体越来越小,尾鳍变短。最好引进同品种鱼进行有目的远缘杂交,以防次品种退化,达到改良品种的目的。但孔雀鱼寿命很短,一般只有2-3年。第一胎一般产的比较少,大约产10~80尾;第二胎大约产80~120尾。价格几元到几十元甚至几百元1条不等
  孔雀鱼在狭窄的区域内会有争地盘的现象,出现达到导致鱼只致死,所以当地方狭小的时候适合单条养殖。
孔雀鱼在1859年,德国鱼类学者Wilhelm C.H. Peters在委内瑞拉首都卡拉卡斯的Rio Guaire地方发现孔雀鱼,因此他成了最早开始描述这种小型淡水鱼的科学家,由于孔雀鱼看来和Poecilia (鱼名)family的鱼类很相像,所以Wilhelm C.H. Peters就命名孔雀鱼为Poecilia reticulata。Reticulata这个字意指孔雀鱼身上部分重叠的鳞片形成蕾丝般的图样。1861年时,西班牙的Senior Filippi得到一些来自巴巴多斯(Barbados)的孔雀鱼标本,由于他没看到Peter曾经做过的描述,而误认为自己发现新的「属」。Senior Filippi发现到孔雀鱼看起来和Poecilia十分相似,于是将它称作Lebistes poeciloides (Frazer-Brunner, 1953),而『孔雀鱼』这名称则是一直等到英国的植物学家Robert John Lechmere Guppy从特立尼达(Trinidad)带回一些标本回去鉴定以后,经大英博物馆的Dr. Albert Gunther(人名)鉴定此标本为新的物种,为表彰Robert Guppy,所称它作Girardinus guppyi,『孔雀鱼』这名称从此才被确立。孔雀鱼的原产地是在委内瑞拉(Venezuela)、圭亚那(Guyana)、南美洲的北部海岸地带和一些加勒比海(Caribbean Sea)上的岛屿。由于『孔雀鱼』拥有多种的色彩花样,所以也被大家称为彩虹鱼。孔雀鱼会用它朝上翘的嘴吃掉靠近水面的蚊子幼虫,所以野生的孔雀鱼曾在1930年代,被引进新加坡,来控制红树林沼泽地的蚊子数量(Herre, 1940)。【以上文章节录自「台湾优质孔雀鱼协会」网站】
   孔雀鱼事实上,根据各项资料的记载,玩赏改良的孔雀鱼的风气最迟在1950年代就已开始。像蛇王、红孔雀这一类的鱼只可说是开路先锋。我在观赏ET30年特集时,特别注意到主角小男孩的房中有一缸孔雀鱼,里头便含有红孔雀及红尾蛇王【镜头有清楚的带到】,以体型来说,和现在的红孔雀相较一点也不逊色,一定是人工改良的产品。我想这也是为什麼美国的红孔雀体型及色泽如此优良的主因。
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